Shoe-nail.



G. A. & S. A. DOBYNE.

SHOE NAIL.

APPLICATION FILED APR. 2s, 1912.

TNTTED STATES PATENT @FFTCEJ GEORGE A. noernn AND ernennt A. ynosrnn, or se Louis, Missoula, .asssnons 're CHAMPION sic-Ion lasciami-:RY COMPANY, or Str. LOUIS, MISSOURI, A ConroidF-72,213. y i,

Specification of Letters Patenti Application ated April '26, 1912'. serian No. 693386.

.Patented Sept. 2, 'il 913.

To all whom, z't may concern;

Be it known that we, Geenen A. Donvnn and S'rernrn A. DonrNn, citizens of the United States, and residing at St. Louis, in the State of Missouri, have invented certain new and useful Improvements in Shoe-Nails, of which the following is a specification.

This invention relates to nails, and more particularly to shoe nails,

In the manufacture of shoes, more particularly in the operation of attaching soles of McKay shoes, the fastening means are passed through the outsole, tapsolc, upper and insole. rlhe attaching seam must lie as close to the Outsole as possible in order to make a tight seam, and in order to present a neat appearance. lllhere the seam is a metallic seam, 2'. e., formed by a row of metallic fasteners or nails, the clenched points of the nails will lie on the insole close to the inside surface of the upper. Now it is necessary that the clenched points extend along the seam in order to produce a flexible and neat shoe. It is therefore necessary to accurately control the cleneh of the nail so as to produce this result. The clenching anvil used. with shoe machines is of that type having a clenching surface in the form of a ment of a sphere. Such a spherical clenching anvil is necessary in order that the shoe supporting horn may be rotated as the shoe is being nailed. Such an anvil will not however by itself accurately control the di rection of the cleneh, but the point of the nail is liable to turn sidewise to a more or less extent, and may pass through the upper and thus ruin the shoe.

rlhe objects of this invention therefore are to produce a nail which is so constructed that it will itself control the direction of the clench, whereby it is insured that the nail will be clenched in a predetermined direction.

Further objects will appear from the detail description taken in connection with the accompanyingdrawing in which:

Figures l and 2 are views of the nail, Fig. 2 being an enlarged detail of the point formed on the nail, and Fig. 3 is a section through the sole of a McKay shoe attached by means of the nail forming the subject matter of this invention.

Referring to the accompanying drawing, the nailv as shown comprises a shank 10 having a laterally extending head beveling to the shank as shown at 1Q. The shank tapers slightly to its point 13 and this point is slightly turned or dellected in the direction of its head. This bend is formed as :fully described in our application Serial No.72-i1,t3S0, tiled October S, Il)1lQ. In the operation o't' :forming the n ail as described in said application the point is comparatively blunt and the bend given this point is so abrupt that one edge of the point is dellected laterally to form in ellcct the cxtreme point of the .nail as shown at 14.-.

The horn used with shoe machines is provided with a clenching anvil having a clenching surface in the form of a segment of a sphere. If the nail formed as described above is driven through leather and the point thereof strikes an anvil, this turned point will cleneh in the direction given to it by the turn. Such a clenched point is shown at l5 Fig. 3, which shows the nail driven through the layers of leather in a McKay shoe. rlhe turn given the point 15:3 must be short and sharp. 'lhis turn must he sullicient to cause the direction of clench to be predetermined and to cause the point to clench in the direction given it by this preliminary turn, but must not be sullicient to cause the nail to turn or curl while passing through the material. The turn must he such that the actual clenching is done by the anvil, and the nail must not turn or curl while passing through the material. .ln other words the direction and the amount of the turn on the point of the nail must be su'llicient to ca use it to be clenched in a predetermined direction, but not greater. rThe turn need only be slight.. and by keeping the turn slight, sharp and short, the desired rcsults are obtained. The nail when formed in the nail making machine is made by cutting piet-es out of one edge of a strip or ribbon. In view of the :tact that one edge of the nail will ther-etere be uncut and rolled and the other side out, the cut sido will be the weaker, and the nail will bend toward the cut side. This will to some extent promote the clenching of the nail point in the direction of the laterally extending head.

It is obvious that various changes may be made in the details of the nail, within the scope of the claims, without departing from the spirit of this invention, and it is therefore to be understood that this invention is not to be limited to the specilic details shown and described except as required by the claims. l

Having tlius described the invention What is claimed is:

l. A shoe-nail having its point deected an amount Suii'icient to predeterinine the direction ofits clench by an anvil but not sufiicient to cause the point to turn While passing through the material.

2. A shoe-nail having a laterally extending head, and having its point deflected laterally in the `direction of the head an amount sufficient to predetermine the direct-ion of its clench by an anvilbut not sufficient to cause the point to turn Whilepassing through the material.

3. A shoe-nail having one of its edges cut and having its point deflected laterally toward the cut edge an amount suticient to predetermine the direction of its clench by an anvil but not suiicient to cause the point to turn While passing through the material.

4. A Shoe nail having av comparatively blunt point deflected laterally an amount sumcient to predeterinine the direction of its clench by an anvil.

In testimony whereof We affix our signatures in presence of two Witnesses.V

GEORGE A. DOBYNE. STEPHEN A. DOBYNE.V

Vitnesses J. H. BRUNINGA, E. O. SoHLossER.

Copies of this patent may be obtained for ve cents'each, by addressing the Commissioner of Patents, Washington, D. C. 

